@55160:I like the idea.
@55165:Cute. It's a shame we didn't see it in the game! Stupid Hisao never asked her to stroll together with him on days without lessons. I hope, he'll be doing it after a good ending.

@55172:@55171:Why is it supposed to be official art? Because weee drew it? She drew a lot of Rins in different casual closes. Why consider this outfit to be the right one and not another one?
Lots of stuff is being thrown away from game-betas. Including parts of the story. Only the final product counts as canonical.
For instance it would be nonsensical to consider the fox Bhati from "Lion King" as canon only because it was present in the early concept art. It never made it to the final product.

@55175:As I already mentioned different sources of "evidence" clearly contradict each other. There is no good reason to consider this one as the correct one and ignore all the others.
Liking to think that something is true and knowing that something is true are two different things. The act of considering those things to be equal has a name. It's called "wishful thinking".
Rins casual outfit will remain a mystery for all eternity.

@55173:Well, because we see there that all the other girls on picture are dressed in their casual clothes which we saw in the game. And Rin dressed in casual clothes together with them. So what's the conclusion?

@55177:There is no unambiguous conclusion. Each "official" picture of Rin in casual closes depicts her with different casual clothes.
There is no justification to pick THIS picture and ignore all the others. The random artist who drew this did not know how to draw Rin, so he had to make something up. There is no reason to consider it canonical.
To say "Here as a picture of five girls in casual clothes. Four out of five are in their canonical clothes. Therefore Rin is in her canonical clothes too." is as absurd as to say "Here is a picture of the seven world wonders. Six out of seven are already destroyed. Therefore the Great Pyramid of Giza is already destroyed too."
[email protected]#$%!

@55179:And the fact that even the KS devs depict Rin differently each time they draw her in casual clothes only supports the conclusion:
A common vision of how the casual Rin is supposed to look like that all the KS devs agree upon simply doesn't exist.